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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2017-06-09 20:36:31 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-06-22 02:43:12 +0200 |
| commit | 772bf1e2878ecfca0d1f332071c83e021dd9cf01 (patch) | |
| tree | 432cea90575ff9277a72960e7eea4bc988e6c138 /drivers/acpi/acpica | |
| parent | 41f1830f5a7af77cf5c86359aba3cbd706687e52 (diff) | |
| download | linux-0-day-772bf1e2878ecfca0d1f332071c83e021dd9cf01.tar.gz linux-0-day-772bf1e2878ecfca0d1f332071c83e021dd9cf01.tar.xz | |
ACPI: configfs: Unload SSDT on configfs entry removal
Call directly into acpica to load a table to obtain its index on return.
We choose the direct call of acpica internal functions to avoid having
to modify its API which is used outside of Linux as well.
Use that index to unload the table again when the corresponding
directory in configfs gets removed. This allows to change SSDTs without
rebooting the system. It also allows to destroy devices again that a
dynamically loaded SSDT created.
This is widely similar to the DT overlay behavior.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpica')
| -rw-r--r-- | drivers/acpi/acpica/tbdata.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/tbdata.c b/drivers/acpi/acpica/tbdata.c index 27c5c27d48181..c9d6fa6d7cc6f 100644 --- a/drivers/acpi/acpica/tbdata.c +++ b/drivers/acpi/acpica/tbdata.c @@ -867,6 +867,8 @@ exit: return_ACPI_STATUS(status); } +ACPI_EXPORT_SYMBOL(acpi_tb_install_and_load_table) + /******************************************************************************* * * FUNCTION: acpi_tb_unload_table @@ -914,3 +916,5 @@ acpi_status acpi_tb_unload_table(u32 table_index) acpi_tb_set_table_loaded_flag(table_index, FALSE); return_ACPI_STATUS(status); } + +ACPI_EXPORT_SYMBOL(acpi_tb_unload_table) |